72 radial leaded automotive varistors radial leaded transguard ? v w (dc) dc working voltage [v] v w (ac) ac working voltage [v] v b typical breakdown votage [v @ 1ma dc ] v c clamping voltage [v @ i iv ] i vc test current for v c i l maximum leakage current at the working voltage [a] e t transient energy rating [j, 10x1000s] e ld load dump energy (x10) [j] i p peak current rating [a, 8x20s] cap typical capacitance [pf] @ frequency specified and 0.5v rms v jump jump start (v) p diss power dissipation (w) general description avx radial leaded multi-layer varistors are aec-q200 qualified and are designed for durability in harsh environments or applications where leaded component is prefered. the mlv advantage is bi-directional transient voltage protection and emi/rfi attenuation in the off state. this allows designers to combine the circuit protection and emi/rfi attenuation function into a single highly reliable device. vr20 avx style vr20 how to order physical dimensions electrical characteristics as series as = automotive 18 voltage 18 = 18v 26 = 26v 48 = 48v f energy f = 0.7j h = 1.2j j = 1.6j 390 clamping voltage 390 = 42v 540 = 54v 560 = 60v 101 = 100v r leads r = rohs compliant tr2 packaging blank = bulk tr1 = t&r standard 1 tr2 = t&r standard 2 mm (inches) avx style width height thickness lead lead (w (h) (t) spacing diameter vr20 5.59 max 5.08 max 3.175 max 2.54 0.508) (0.220) (0.200) (0.125) (0.100) (0.020 w h .100 (2.54).030 1.0 (25.4) min. .060 (1.52) max. avx part number v w dc v w ac v b v c i vc i l e t e ld i p cap freq v jump p diss vr20as18j390 18.0 13.0 25.510% 42 5 10 1.6 3 500 3100 k 27.5 0.030 vr20as26f540 26.0 18.0 33.010% 54 1 15 0.7 1.5 200 600 k 27.5 0.008 vr20as26h560 26.0 18.0 34.510% 60 5 10 1.2 3 300 1200 k 27.5 0.018 vr20as48h101 48.0 34.0 62.010% 100 1 10 1.2 C 250 500 k 48 0.022 features ? aec q200 qualified ? esd rated to 25kv (hbm esd level 6) ? emi/rfi attenuation in off state ? excellent current and energy handling applications ? harsh environment ? inductive switching ? dc motors ? water pump ? fuel pump ? relays and more general characteristics ? operating temperatures: -55oc to +125oc ? working voltage: 18-48vdc
73 radial leaded automotive varistors radial leaded transguard ? typical performance curves 0 20 40 60 80 100 120 140 160 180 200 1.e-09 1.e-06 1.e-03 1.e+00 1.e+03 voltage (v) current (amps) vr20as18j390 vr20as26f540 vr20as26h560 vr20as48h101 typical voltage current characteristics tape & reel packaging options 0.630 (16.0) min. 0.748 (19.0) min. tr1 tape & reel standard 1 tr2 tape & reel standard 2
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